What is the part of speech for crisp?

"Crisp" can be a few different parts of speech depending on its use:

* Adjective: Describing a quality, such as "The air was crisp and cold."

* Noun: A thin, flat cracker, such as "I enjoyed a crisp with my cheese."

* Verb: To make something crisp, such as "He crisped the bacon in a hot pan."

So, to know the specific part of speech, you need to look at the context in which it's used.